[Tagging] haha barriers

[Anne-Karoline Distel]

I'm with Matteusz on this. There are 32 examples in Ireland (using
ditch=ha_ha") and 30 in the UK (using barrier=haha). There are even
placenames referring to ha-has, like a street
<https://www.openstreetmap.org/way/233762296> in Killarney, Co. Kerry of
that name. They're not just any ditch, but part of the planned park
landscape of a manor house. I think they deserve their own tag to be
differentiated from just ordinary ditches on any old farm. (No offence
to the non-gentry farmer intended.)

Anne

On 29/12/2021 17:12, Raphael wrote:
> Hi together
>
> On Wed, 29 Dec 2021 at 17:48,<osm.tagging at thorsten.engler.id.au>  wrote:
>
>> I would have just mapped these as a 2 parallel ways with barrier=retaining_wall and man_made=embankment (such that the “downward” side of each is pointing towards each other).
>>
>> This allows the exact mapping of not just the position of the wall, but also the top of the slope towards the wall.
> I would also map it that way.
>
> Analogously, in the case of a double ha-ha, i would map it as a
> man_made=embankment, a barrier=wall and another man_made=embankment.
> (Or as two barrier=retaining_wall in the case of a wide trench
> consisting of two retainging walls [^1], which according to Wikipedia
> is also a ha-ha.)
>
> [^1]:https://commons.wikimedia.org/wiki/File:Petit_Trianon_Haha.JPG
>
> Regards
> Raphael
>
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